AP CHem, finding concentration of H2O2 by titration

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SUMMARY

The discussion focuses on determining the concentration of hydrogen peroxide (H2O2) through titration using potassium permanganate (KMnO4) and sulfuric acid (H2SO4). The user reported an average titrant volume of 34.5 mL for a 5 mL H2O2 solution and 65 mL of 0.6 M H2SO4, leading to a calculated concentration of 0.8625 M for H2O2. The user expressed concern over a high percentage error compared to the expected concentration of 0.03 M, indicating a need for clarification on the calculation process and error analysis.

PREREQUISITES
  • Understanding of titration techniques
  • Knowledge of molarity calculations
  • Familiarity with redox reactions
  • Basic chemistry of sulfuric acid and potassium permanganate
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  • Review titration calculations and error analysis methods
  • Learn about the stoichiometry of redox reactions
  • Study the conversion of molarity to percentage concentration
  • Investigate common sources of error in titration experiments
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Chemistry students, laboratory technicians, and educators involved in analytical chemistry and titration methodologies.

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Homework Statement



I need to find the concentration of the H2O2 that we used

Homework Equations


2KMnO4 + 5H2O2 + 3H2SO4 → 2MnSO4 + 5O2 + 8 H2O + K2SO4 (not sure if correct)

we got an average of 34.5 ml of titrant, for solution we were adding the titrant to being 5ml of Hydrogen peroxide, and 65 ml of H2SO4

.6 m H2SO4
.050 M KMnO4
? M H2O2 (what I am trying to find)

The Attempt at a Solution



.8625 (very high % error, supposed to be .03 If i did it correctly [3 grams per 100ml in a water based solution is .03 right?])I would like to know what I did wrong, and how i could fix it.thank you in advance!
 
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From the information given 0.8626 M is a correct answer.

Convert M to %, THEN calculate the error.
 

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